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Diffstat (limited to 'sys/contrib/dev/acpica/nsobject.c')
| -rw-r--r-- | sys/contrib/dev/acpica/nsobject.c | 523 |
1 files changed, 523 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/nsobject.c b/sys/contrib/dev/acpica/nsobject.c new file mode 100644 index 0000000..6dd5fe3 --- /dev/null +++ b/sys/contrib/dev/acpica/nsobject.c @@ -0,0 +1,523 @@ +/******************************************************************************* + * + * Module Name: nsobject - Utilities for objects attached to namespace + * table entries + * $Revision: 46 $ + * + ******************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999, Intel Corp. All rights + * reserved. + * + * 2. License + * + * 2.1. This is your license from Intel Corp. under its intellectual property + * rights. You may have additional license terms from the party that provided + * you this software, covering your right to use that party's intellectual + * property rights. + * + * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a + * copy of the source code appearing in this file ("Covered Code") an + * irrevocable, perpetual, worldwide license under Intel's copyrights in the + * base code distributed originally by Intel ("Original Intel Code") to copy, + * make derivatives, distribute, use and display any portion of the Covered + * Code in any form, with the right to sublicense such rights; and + * + * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent + * license (with the right to sublicense), under only those claims of Intel + * patents that are infringed by the Original Intel Code, to make, use, sell, + * offer to sell, and import the Covered Code and derivative works thereof + * solely to the minimum extent necessary to exercise the above copyright + * license, and in no event shall the patent license extend to any additions + * to or modifications of the Original Intel Code. No other license or right + * is granted directly or by implication, estoppel or otherwise; + * + * The above copyright and patent license is granted only if the following + * conditions are met: + * + * 3. Conditions + * + * 3.1. Redistribution of Source with Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification with rights to further distribute source must include + * the above Copyright Notice, the above License, this list of Conditions, + * and the following Disclaimer and Export Compliance provision. In addition, + * Licensee must cause all Covered Code to which Licensee contributes to + * contain a file documenting the changes Licensee made to create that Covered + * Code and the date of any change. Licensee must include in that file the + * documentation of any changes made by any predecessor Licensee. Licensee + * must include a prominent statement that the modification is derived, + * directly or indirectly, from Original Intel Code. + * + * 3.2. Redistribution of Source with no Rights to Further Distribute Source. + * Redistribution of source code of any substantial portion of the Covered + * Code or modification without rights to further distribute source must + * include the following Disclaimer and Export Compliance provision in the + * documentation and/or other materials provided with distribution. In + * addition, Licensee may not authorize further sublicense of source of any + * portion of the Covered Code, and must include terms to the effect that the + * license from Licensee to its licensee is limited to the intellectual + * property embodied in the software Licensee provides to its licensee, and + * not to intellectual property embodied in modifications its licensee may + * make. + * + * 3.3. Redistribution of Executable. Redistribution in executable form of any + * substantial portion of the Covered Code or modification must reproduce the + * above Copyright Notice, and the following Disclaimer and Export Compliance + * provision in the documentation and/or other materials provided with the + * distribution. + * + * 3.4. Intel retains all right, title, and interest in and to the Original + * Intel Code. + * + * 3.5. Neither the name Intel nor any other trademark owned or controlled by + * Intel shall be used in advertising or otherwise to promote the sale, use or + * other dealings in products derived from or relating to the Covered Code + * without prior written authorization from Intel. + * + * 4. Disclaimer and Export Compliance + * + * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED + * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE + * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, + * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY + * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY + * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A + * PARTICULAR PURPOSE. + * + * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES + * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR + * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, + * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY + * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL + * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS + * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY + * LIMITED REMEDY. + * + * 4.3. Licensee shall not export, either directly or indirectly, any of this + * software or system incorporating such software without first obtaining any + * required license or other approval from the U. S. Department of Commerce or + * any other agency or department of the United States Government. In the + * event Licensee exports any such software from the United States or + * re-exports any such software from a foreign destination, Licensee shall + * ensure that the distribution and export/re-export of the software is in + * compliance with all laws, regulations, orders, or other restrictions of the + * U.S. Export Administration Regulations. Licensee agrees that neither it nor + * any of its subsidiaries will export/re-export any technical data, process, + * software, or service, directly or indirectly, to any country for which the + * United States government or any agency thereof requires an export license, + * other governmental approval, or letter of assurance, without first obtaining + * such license, approval or letter. + * + *****************************************************************************/ + + +#define __NSOBJECT_C__ + +#include "acpi.h" +#include "amlcode.h" +#include "acnamesp.h" +#include "acinterp.h" +#include "actables.h" + + +#define _COMPONENT NAMESPACE + MODULE_NAME ("nsobject") + + +/******************************************************************************* + * + * FUNCTION: AcpiNsAttachObject + * + * PARAMETERS: Node - Parent Node + * Object - Object to be attached + * Type - Type of object, or ACPI_TYPE_ANY if not + * known + * + * DESCRIPTION: Record the given object as the value associated with the + * name whose ACPI_HANDLE is passed. If Object is NULL + * and Type is ACPI_TYPE_ANY, set the name as having no value. + * + * MUTEX: Assumes namespace is locked + * + ******************************************************************************/ + +ACPI_STATUS +AcpiNsAttachObject ( + ACPI_NAMESPACE_NODE *Node, + ACPI_OPERAND_OBJECT *Object, + OBJECT_TYPE_INTERNAL Type) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + ACPI_OPERAND_OBJECT *PreviousObjDesc; + OBJECT_TYPE_INTERNAL ObjType = ACPI_TYPE_ANY; + UINT8 Flags; + UINT16 Opcode; + + + FUNCTION_TRACE ("NsAttachObject"); + + + /* + * Parameter validation + */ + + if (!AcpiGbl_RootNode) + { + /* Name space not initialized */ + + REPORT_ERROR (("NsAttachObject: Namespace not initialized\n")); + return_ACPI_STATUS (AE_NO_NAMESPACE); + } + + if (!Node) + { + /* Invalid handle */ + + REPORT_ERROR (("NsAttachObject: Null NamedObj handle\n")); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + if (!Object && (ACPI_TYPE_ANY != Type)) + { + /* Null object */ + + REPORT_ERROR (("NsAttachObject: Null object, but type not ACPI_TYPE_ANY\n")); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + if (!VALID_DESCRIPTOR_TYPE (Node, ACPI_DESC_TYPE_NAMED)) + { + /* Not a name handle */ + + REPORT_ERROR (("NsAttachObject: Invalid handle\n")); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + /* Check if this object is already attached */ + + if (Node->Object == Object) + { + DEBUG_PRINT (TRACE_EXEC, + ("NsAttachObject: Obj %p already installed in NameObj %p\n", + Object, Node)); + + return_ACPI_STATUS (AE_OK); + } + + + /* Get the current flags field of the Node */ + + Flags = Node->Flags; + Flags &= ~ANOBJ_AML_ATTACHMENT; + + + /* If null object, we will just install it */ + + if (!Object) + { + ObjDesc = NULL; + ObjType = ACPI_TYPE_ANY; + } + + /* + * If the object is an Node with an attached object, + * we will use that (attached) object + */ + + else if (VALID_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_NAMED) && + ((ACPI_NAMESPACE_NODE *) Object)->Object) + { + /* + * Value passed is a name handle and that name has a + * non-null value. Use that name's value and type. + */ + + ObjDesc = ((ACPI_NAMESPACE_NODE *) Object)->Object; + ObjType = ((ACPI_NAMESPACE_NODE *) Object)->Type; + + /* + * Copy appropriate flags + */ + + if (((ACPI_NAMESPACE_NODE *) Object)->Flags & ANOBJ_AML_ATTACHMENT) + { + Flags |= ANOBJ_AML_ATTACHMENT; + } + } + + + /* + * Otherwise, we will use the parameter object, but we must type + * it first + */ + + else + { + ObjDesc = (ACPI_OPERAND_OBJECT *) Object; + + + /* If a valid type (non-ANY) was given, just use it */ + + if (ACPI_TYPE_ANY != Type) + { + ObjType = Type; + } + + + /* + * Type is TYPE_Any, we must try to determinte the + * actual type of the object + */ + + /* + * Check if value points into the AML code + */ + else if (AcpiTbSystemTablePointer (Object)) + { + /* + * Object points into the AML stream. + * Set a flag bit in the Node to indicate this + */ + + Flags |= ANOBJ_AML_ATTACHMENT; + + /* + * The next byte (perhaps the next two bytes) + * will be the AML opcode + */ + + MOVE_UNALIGNED16_TO_16 (&Opcode, Object); + + /* Check for a recognized OpCode */ + + switch ((UINT8) Opcode) + { + + case AML_OP_PREFIX: + + if (Opcode != AML_REVISION_OP) + { + /* + * OpPrefix is unrecognized unless part + * of RevisionOp + */ + + break; + } + + /* Else fall through to set type as Number */ + + + case AML_ZERO_OP: case AML_ONES_OP: case AML_ONE_OP: + case AML_BYTE_OP: case AML_WORD_OP: case AML_DWORD_OP: + + ObjType = ACPI_TYPE_NUMBER; + break; + + + case AML_STRING_OP: + + ObjType = ACPI_TYPE_STRING; + break; + + + case AML_BUFFER_OP: + + ObjType = ACPI_TYPE_BUFFER; + break; + + + case AML_MUTEX_OP: + + ObjType = ACPI_TYPE_MUTEX; + break; + + + case AML_PACKAGE_OP: + + ObjType = ACPI_TYPE_PACKAGE; + break; + + + default: + + DEBUG_PRINT (ACPI_ERROR, + ("AML Opcode/Type [%x] not supported in attach\n", + (UINT8) Opcode)); + + return_ACPI_STATUS (AE_TYPE); + break; + } + } + + else + { + /* + * Cannot figure out the type -- set to DefAny which + * will print as an error in the name table dump + */ + + if (GetDebugLevel () > 0) + { + DUMP_PATHNAME (Node, + "NsAttachObject confused: setting bogus type for ", + ACPI_INFO, _COMPONENT); + + if (AcpiTbSystemTablePointer (Object)) + { + DEBUG_PRINT (ACPI_INFO, + ("AML-stream code %02x\n", *(UINT8 *) Object)); + } + + else if (VALID_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_NAMED)) + { + DUMP_PATHNAME (Object, + "name ", ACPI_INFO, + _COMPONENT); + } + + else + { + DUMP_PATHNAME (Object, "object ", + ACPI_INFO, _COMPONENT); + DUMP_STACK_ENTRY (Object); + } + } + + ObjType = INTERNAL_TYPE_DEF_ANY; + } + } + + + DEBUG_PRINT (TRACE_EXEC, + ("NsAttachObject: Installing obj %p into NameObj %p [%4.4s]\n", + ObjDesc, Node, &Node->Name)); + + + /* + * Must increment the new value's reference count + * (if it is an internal object) + */ + + AcpiCmAddReference (ObjDesc); + + /* Save the existing object (if any) for deletion later */ + + PreviousObjDesc = Node->Object; + + /* Install the object and set the type, flags */ + + Node->Object = ObjDesc; + Node->Type = (UINT8) ObjType; + Node->Flags |= Flags; + + + /* + * Delete an existing attached object. + */ + + if (PreviousObjDesc) + { + /* One for the attach to the Node */ + + AcpiCmRemoveReference (PreviousObjDesc); + + /* Now delete */ + + AcpiCmRemoveReference (PreviousObjDesc); + } + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiNsDetachObject + * + * PARAMETERS: Node - An object whose Value will be deleted + * + * RETURN: None. + * + * DESCRIPTION: Delete the Value associated with a namespace object. If the + * Value is an allocated object, it is freed. Otherwise, the + * field is simply cleared. + * + ******************************************************************************/ + +void +AcpiNsDetachObject ( + ACPI_NAMESPACE_NODE *Node) +{ + ACPI_OPERAND_OBJECT *ObjDesc; + + + FUNCTION_TRACE ("NsDetachObject"); + + ObjDesc = Node->Object; + if (!ObjDesc) + { + return_VOID; + } + + /* Clear the entry in all cases */ + + Node->Object = NULL; + + /* Found a valid value */ + + DEBUG_PRINT (ACPI_INFO, + ("NsDetachObject: Object=%p Value=%p Name %4.4s\n", + Node, ObjDesc, &Node->Name)); + + /* + * Not every value is an object allocated via AcpiCmCallocate, + * - must check + */ + + if (!AcpiTbSystemTablePointer (ObjDesc)) + { + /* Attempt to delete the object (and all subobjects) */ + + AcpiCmRemoveReference (ObjDesc); + } + + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiNsGetAttachedObject + * + * PARAMETERS: Handle - Parent Node to be examined + * + * RETURN: Current value of the object field from the Node whose + * handle is passed + * + ******************************************************************************/ + +void * +AcpiNsGetAttachedObject ( + ACPI_HANDLE Handle) +{ + FUNCTION_TRACE_PTR ("NsGetAttachedObject", Handle); + + + if (!Handle) + { + /* handle invalid */ + + REPORT_WARNING (("NsGetAttachedObject: Null handle\n")); + return_PTR (NULL); + } + + return_PTR (((ACPI_NAMESPACE_NODE *) Handle)->Object); +} + + |
